diff --git a/vid_convert.py b/vid_convert.py
index 76e8995..6e7b0d6 100755
--- a/vid_convert.py
+++ b/vid_convert.py
@@ -14,6 +14,7 @@ def get_infos(file):
     -> http://ffmpeg.org/ffprobe.html
     '''
     v_infos = {
+            'index': None,
             'height': None,
             'width': None,
             'color_primaries': None,
@@ -123,12 +124,13 @@ def stabilization(file):
 
 
 def convert_audio(file, track, volume_adj, channels, channel_layout, language, title):
-    bitrate = 64*channels
+    bitrate = f'{64*channels}k'
     codec = 'libopus'
     metadatas = f'-metadata language="{language}" -metadata title="{title}"'
-    command = f'ffmpeg -i {file} -map 0:{track} -vn -sn -c:a {codec} -b:a {bitrate} -mapping_family 1 -filter:a volume={volume_adj}dB,aformat=channel_layouts={channel_layout} -y {file}_audio_{track}.mka'
-    logging.debug{command}
-
+    command = f'ffmpeg -loglevel error -i {file} -map 0:{track} -vn -sn -c:a {codec} -b:a {bitrate} -mapping_family 1 -filter:a volume={volume_adj},aformat=channel_layouts={channel_layout} -y {file}_audio_{track}.mka'
+    logging.debug(command)
+    result = subprocess.getoutput(command)
+    logging.info(result)
 
 
 if __name__ == '__main__':
@@ -142,10 +144,12 @@ if __name__ == '__main__':
         logging.basicConfig(format='[%(asctime)s]\n%(message)s', level=logging.DEBUG, datefmt='%d/%m/%Y %H:%M:%S')
     else:
         logging.basicConfig(format='[%(asctime)s]\n%(message)s', level=logging.INFO, datefmt='%d/%m/%Y %H:%M:%S')
-    infos = get_infos(args.f_input)
-    interlaced = is_interlaced(args.f_input, infos)
-    cropsize = cropping(args.f_input, infos)
-    volumes = volume_audio(args.f_input, infos)
+    file = args.f_input
+    infos = get_infos(file)
+    interlaced = is_interlaced(file, infos)
+    cropsize = cropping(file, infos)
+    volumes = volume_audio(file, infos)
     if args.stab:
-        stabilization(args.f_input)
-    for 
+        stabilization(file)
+    for track in infos['audio']:
+        convert_audio(file, track['index'], volumes[track['index']], track['channels'], track['channel_layout'], track['language'], track['title'])